Hybrid drive device

Abstract

During shift control of a transmission mechanism, a hybrid drive device computes the amount of change in input torque (deTr) acting on the transmission mechanism and an input torque change time (t15), and controls a motor so that motor torque is changed by the amount of change in input torque (deTr), when the motor can change the amount of change in input torque (deTr), and outputs, when the motor cannot change the amount of change in input torque (deTr), an engine torque signal (Tesig1) at an engine torque change time (t14) earlier than the input torque change time (t15) at which drive power of the motor is changed when the motor can change the amount of change in input torque (deTr).

The invention claimed is: 
     
       1. A hybrid drive device comprising:
 a transmission mechanism that has an input member drive-coupled to an engine and an output member drive-coupled to wheels, and performs shift control for changing a transmission gear ratio between the input member and the output member; 
 a rotating electrical machine drive-coupled to the transmission mechanism; and 
 a control part that, during shift control of the transmission mechanism, computes a change time and an amount of change by which drive power acting on the transmission mechanism is changed, controls the rotating electrical machine so that drive power of the rotating electrical machine is changed by the amount of change, when the rotating electrical machine can change drive power by the amount of change, and outputs an engine instruction signal for changing drive power to the engine, when the rotating electrical machine cannot change drive power by the amount of change, 
 wherein 
 when the rotating electrical machine cannot change drive power by the amount of change, the control part outputs the engine instruction signal to the engine at a pre-change time earlier than a change time at which drive power of the rotating electrical machine is changed when the rotating electrical machine can change drive power by the amount of change. 
 
     
     
       2. The hybrid drive device according to  claim 1 , wherein
 the control part 
 outputs, when the rotating electrical machine can change drive power by the amount of change, a rotating electrical machine instruction signal for changing drive power to the rotating electrical machine at the change time so that drive power of the rotating electrical machine is changed by the amount of change, and 
 outputs, when the rotating electrical machine cannot change drive power by the amount of change, the engine instruction signal to the engine at the pre-change time earlier than the change time at which the rotating electrical machine instruction signal is outputted. 
 
     
     
       3. The hybrid drive device according to  claim 2 , wherein
 the control part is a first control part, 
 the rotating electrical machine instruction signal is a first rotating electrical machine instruction signal, 
 the engine instruction signal is a first engine instruction signal, 
 the first control part can output the first rotating electrical machine instruction signal and the first engine instruction signal to a fourth control part that outputs a second rotating electrical machine instruction signal to a second control part and outputs a second engine instruction signal to a third control part that outputs an engine drive signal for controlling drive of the engine, the second control part outputting a rotating electrical machine drive signal for controlling drive of the rotating electrical machine, and 
 when the rotating electrical machine cannot change drive power by the amount of change, an engine drive signal for changing drive power is outputted to the engine from the third control part at a pre-output time earlier than an output time at which a rotating electrical machine drive signal for changing drive power is outputted to the rotating electrical machine from the second control part when the rotating electrical machine can change drive power by the amount of change. 
 
     
     
       4. The hybrid drive device according to  claim 1 , wherein the pre-change time is earlier by time required for the engine to change drive power than a change time at which drive power of the rotating electrical machine is changed when the rotating electrical machine can change drive power by the amount of change. 
     
     
       5. The hybrid drive device according to  claim 1 , wherein during shift control of the transmission mechanism, the control part computes whenever necessary whether the rotating electrical machine can change drive power by the amount of change, and determines, at the pre-change time, that the rotating electrical machine cannot change drive power by the amount of change. 
     
     
       6. The hybrid drive device according to  claim 1 , wherein the control part determines a manner used when the engine changes drive power, and sets different pre-change times for different manners. 
     
     
       7. The hybrid drive device according to  claim 1 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       8. The hybrid drive device according to  claim 2 , wherein the pre-change time is earlier by time required for the engine to change drive power than a change time at which drive power of the rotating electrical machine is changed when the rotating electrical machine can change drive power by the amount of change. 
     
     
       9. The hybrid drive device according to  claim 3 , wherein the pre-change time is earlier by time required for the engine to change drive power than a change time at which drive power of the rotating electrical machine is changed when the rotating electrical machine can change drive power by the amount of change. 
     
     
       10. The hybrid drive device according to  claim 3 , wherein during shift control of the transmission mechanism, the control part computes whenever necessary whether the rotating electrical machine can change drive power by the amount of change, and determines, at the pre-change time, that the rotating electrical machine cannot change drive power by the amount of change. 
     
     
       11. The hybrid drive device according to  claim 9 , wherein during shift control of the transmission mechanism, the control part computes whenever necessary whether the rotating electrical machine can change drive power by the amount of change, and determines, at the pre-change time, that the rotating electrical machine cannot change drive power by the amount of change. 
     
     
       12. The hybrid drive device according to  claim 3 , wherein the control part determines a manner used when the engine changes drive power, and sets different pre-change times for different manners. 
     
     
       13. The hybrid drive device according to  claim 11 , wherein the control part determines a manner used when the engine changes drive power, and sets different pre-change times for different manners. 
     
     
       14. The hybrid drive device according to  claim 2 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       15. The hybrid drive device according to  claim 3 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       16. The hybrid drive device according to  claim 4 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       17. The hybrid drive device according to  claim 5 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       18. The hybrid drive device according to  claim 6 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       19. The hybrid drive device according to  claim 9 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase. 
 
     
     
       20. The hybrid drive device according to  claim 13 , wherein
 the transmission mechanism has a gear mechanism and a plurality of friction engagement elements that change a transfer path of the gear mechanism, and performs the shift control by switching at least two of the plurality of friction engagement elements, 
 the change time is a start time of an inertia phase in which a rotational change in the shift control occurs, and 
 the pre-change time is before a start of the inertia phase.